Home / 648,734.80-973,102.20-611,993.20

Finding the Fourth Proportional to 648,734.80, 973,102.20 and 611,993.20

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Solution

The fourth proportional to 648,734.80, 973,102.20 and 611,993.20 is: 917,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,734.80 : 973,102.20 = 611,993.20 : x
  2. Step 2: Convert to fraction form
    648,734.80/973,102.20 = 611,993.20/x
  3. Step 3: Cross multiply
    648,734.80x = 973,102.20 × 611,993.20
  4. Step 4: Simplify right side
    648,734.80x = 595,531,929,305.04
  5. Step 5: Solve for x
    x = 595,531,929,305.04/648,734.80
  6. Step 6: Final answer
    x = 917,989.80

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.